The syntax of generic classes and methods was not added until version

5.0 of Java. Nonetheless, early versions of the language had collections classes such as an array list, or a linked list which were able to store objects, instances of different classes.
a. How were those classes implemented without the generic syntax?
b. Give an example of a program that uses the non-generic version of a class and the equivalent program that uses the generic version. How do the two implementations differ?
c. Why is having the syntax of generics better? Explain and illustrate with a method of the example class.